Sometimes we feel stretched beyond our limits.  In 1 Corinthians 10:13 it says, There hath no temptation taken you but such as is common to man: but God is faithful, who will not suffer you to be tempted above that ye are able; but will with the temptation also make a way to escape, that ye may be able to bear it. When we are stretched, we are tested.  Just like an instrument that has to be tuned to sound beautiful, gold and silver have to be refined to get all the impurities out.  These events are painful in our life but necessary for us to become a vessel that God can use. 

            And I will bring the third part through the fire, and will refine them as silver is refined, and will try them as
           
gold is tried: they shall call on my name, and I will hear them: I will say,
            It is my people: and they shall say, The LORD is my God
.
            Zechariah 13:9